Circuit-breaker.



. No. 760,679. PATENTED MAY 24, 1904.

J. BURRY.

CIRCUIT BREAKER.

APPLIOATIION FILED AUG. so, 1902. y no MODEL.

a sums-sum 2.

No. 760,679. v PA TENTED MAY 24, 1904. J. BURRY.

CIRCUIT BREAKER. APPLICATION FILED-me. so, 1902.

N0 MODEL.

3 SHEETS-SHEET 3L UNITED STATES Patented May 24, 1904. 4

PATENT OFFICE.

*JO I-IN BURRY, OF RIDGEFIELD PARK, NEW JERSEY.

CIRCUIT-BREAKER.

srEcIFrcATroN forming part of Letters PatentNo, 760,679, dated May 24, 1904. t I

, Applicationfiled August 30, 1902. Serial No. 121,550. (No inodel.)

T alltwhom it may concern: a

I ,Be itknown that I, JOHN BURRY, a citizen of the United States, and a resident of Ridge field Park, in the county of Bergen and State of New Jersey, have invented a certain new and useful Improvement inCircuit-Breakers,

of which the following is a specification. This invention relates to transmitting apparatus for printing-telegraph systems, one

object of the inventionbeing to operate both line and local circuits by means of a single trailer.

Other objects are to repeat characters, to

preventf kickingfii to improve the general operation of the transmitter, and to permit of certain adjustments and repairs to be easily 'mon manner.

made

To these ends the invention consists offeatures of construction and comblnations of devices herelnafter described, and more particularly pointed out in the claims concluding this specification.

The preferred form of the invention is illustrated in the accompanying drawings, forming part hereof, in which- Figure 1 is a plan view of the apparatus. Fig. 2 is a plan View of, the trailer and other parts under thetop plate. .Fig. 3 'is a sec- Fig. .4: is

tional view through the sunflower. I an end View of the trader, and F1gs. 5, 6, and 7 are views illustrating-various posltlons and "operations of the repeating devices. I

In the drawings the reference a deslgnates a base of, preferably, an insulating material. Above this based is a top plate 6, of metal, screws 0, and posts (not shown) connecting base and top plate. Between base and top plate and separated from both is a ring (Z, which is suspended from the top plate by screws 0 and posts on the ring, all in a comf g are two sets of keys arranged in concentric circles and mounted to have endwise motion in the plates 6 (i, said keys being raised to normal positions by springs h. The keys of the inner ring f have platina tips or contacts. at their lower ends. Y

The base a is bored through at a pointin the axis of the'circles f g, in which bore is a e Shea/t. Below the bushing c' the shaft is has a grooved pulley fast thereto, whereby the shaft is rotated by means of-acord Z, which is guided byrollers m; Above the bushing 41 is a sleeve 'n', loose on the shaft 7a, and to thissleeve 'n the trailer 0 is secured. The

upper end of sleeve n is bored out for the reception of a friction-bushing p, which connects shaft is and sleeve n. I

9 1s a screw for securing shaft is, sleeve n,

and bushing 12 together. Shaft Z2 is stepped in a spring 0, which may be swung aside at any time by removing oneof the'two screws which secure it in place.

Secured to base a and concentric with but electrically insulated from bushing t'i's a sun- I flowers, whose alternate segmentsare elec-v trically connected and the adjacent-segments of which are other. I

t is a split battery having one pole connected with one set of segments of the sun'- 'flower andthe other pole conn'ectedwith the other 'set of segments. The trailer 0 has a block or brush a mounted to slide vertically in a slot therein to coact withthe sunflower s, a spring 4) keeping the brush a in contact with the sunflowerl The spring 7* is connected with or forms part ofthe line, ashereinafter described. The'described arrangements provide for the reversal of the line-current asblocku slides from one to another segment of the sunflower.

From sprmgr' the line-current passes to a post w and thence through springs my to anare one or morereceivers. The springs or y are so arranged and ad usted that they arev 1n electrically insulated from each 8 5 other post w and thence to line, where there 1 contact with each other when in normal posi:

tion,1as shown in Fig. 2. I The spring w has an armature 2 thereon, which armature 1s 1n front of the poles of an electromagnet 1, which forms part of a local circuit.

2is a rheostat or adjustable resistanceebox connected electrically with posts wto form a shuntfor the circuit-breaker m y. The local circuit includes a metal ring 3,

concentric with but electrically independent of the sunflower s, the keys f, plate I), magnet 1, a battery 4, connections, (the electric conneetion furnished by the plate 6 is indicated in Fig. 2 by the dotted line V,) and the brush 5 and contact-plate 6, on but insulated from the trailer 0. It will be noted that the local circuit is open except when a key f is depressed and arrests the trailer 0 by contacting with plate 6.

The keys 9 when depressed are in the path of a stop-plate 7 on the trailer 0, said stopplate being of insulating material or being insulated from the trailer, so that no current shall pass when the trailer is arrested by a key g.

R is a key having a conical bottom end so placed that when springs :10 y are in normal position and this key is depressed it will force spring y away from spring a: and break their contact, (see Fig. 7 and when the contact between springs y is broken when magnet 1 attracts armature ,2, thus leaving the parts as shown in Fig. 5, the depression of key R will force the springs as 3/ together, Fig. 6, for springs any are so tensioned as to cause spring y when magnet 1 draws spring as over to follow part of the way, so as to pass the point of key R. V

The operation of the foregoing devices is as follows: The trailer 0 is drawn by a suitable motor through the shaft k, and its brush a passes over and in contact with the sunflower 8, continually reversing the line-current, as above stated, and while the brush 5 trails around on ring 3. When any one of the keys in row f is depressed, the trailer 0 is arrested by the contact of plate 6 and the depressed key, which contact closes the local circuit and energizes the magnet 1. The energized magnet 1 attracts armature .2 and so moves spring a: to the position thereof shown in Fig. 5, thus breakingthe contact of springs m 3 with each other and shunting the line-circuit through the rheostat, which almost opens the line. The receiver prints the character corresponding to the depressed key,and if it is desired to repeat the printing of such character the key R,while the depressed key is still held down, is also depressed as many times as it is desired to repeat the printing of such charac-- ter, thus forcing spring 3 into contact with spring 00 (see Fig. 6) an equal number of times. On the release of the depressed keys f and R the same are returned to normal position by their springs, and the friction-drive starts the trailer 0 again and springs 0; 3/ return to their normal positions. (See Fig. 2.) On depressing any key 9 the trailer 0 is arrested thereby and the line-current is prolonged at full strength, since magnet i is not energized at this time and the line-current passes via the springs as y and the character corresponding to the depressed key is printed by the receivers. Such character may be repeated by depressing key R as many times as it is desired to repeat, said key R at each depression forcing the springs .11 1 apart, as shown in Fig. 7, and so shunting the circuit through the rheostat, it being understood that the depressed key 9 is held down while such repeating is taking place. On the release of keys 9 R their springs return them to their normal positions, trailer 0 starts up again, and springs 00 y return to normal position.

It is noted that the fiber or other sleeve 72 provides a simple, durable friction connection between shaft r and sleeve 0 and that it is especially convenient in that when worn it may be removed and another similar sleeve be substituted by any one having a screwdriver-that is to say, this clutch can be adjusted and repaired by any one, so that a skilled person is not required to be called to repair the apparatus when the clutch becomes worn. The amount of friction can be regulated by the screw within certain limits.

What I claim as new, and desire to secure by Letters Patent of the United States, is

1. In a transmitter, a line circuit-breaker consisting of two springs tensioned to press normally against each other, an electromagnet for operating one spring to open the circuit, and a pointed key past whose point the other spring moves or is moved as the circuit is broken and made, whereby the circuit may be remade or be broken by operating said key.

2. In a transmitter, a line circuit-breaker consisting of two springs tensioned to press normal ly against each other, an electromuguet for operating one spring to open the circuit, and a pointed key past whose point the other spring moves or is moved as the circuit is broken and made, whereby the circuit may be remade or be broken by operating said key, with a rheostat for shunting said circuitbreaker when it is opened.

Signed at New York city, in the county of New York and State of New York, this 28th day of August, A. l). 1902.

JOHN HURRY.

Witnesses:

FRANK RYALL, R. W. BARKLEY. 

